EP 3904358 A1 20211103 - IMPROVED METHODS FOR THE ACYLATION OF MAYTANSINOL
Title (en)
IMPROVED METHODS FOR THE ACYLATION OF MAYTANSINOL
Title (de)
VERBESSERTE VERFAHREN ZUR ACYLIERUNG VON MAYTANISOL
Title (fr)
PROCÉDÉS AMÉLIORÉS D'ACYLATION DE MAYTANSINOL
Publication
Application
Priority
- US 201261705731 P 20120926
- EP 18213678 A 20130926
- EP 13774881 A 20130926
- US 2013061839 W 20130926
Abstract (en)
Disclosed is a method of preparing an amino acid ester of maytansinol by reacting maytansinol with an N-carboxyanhydride of an amino acid (NCA) in the presence of a drying agent. Also disclosed is an improved method of preparing an amino acid ester of maytansinol in which a nucleophile is added to the reaction mixture after completion of the reaction between maytansinol and an N-carboxyanhydride of an amino acid.
IPC 8 full level
C07D 498/18 (2006.01); A61P 35/00 (2006.01); C07D 498/16 (2006.01)
CPC (source: CN EP IL RU US)
A61P 35/00 (2018.01 - EP RU); C07D 498/16 (2013.01 - EP IL US); C07D 498/18 (2013.01 - CN EP IL RU US); H01R 12/585 (2013.01 - US); H05K 1/0203 (2013.01 - US); H05K 1/116 (2013.01 - US); H05K 1/181 (2013.01 - US)
Citation (applicant)
- US 4151042 A 19790424 - ASAI MITSUKO [JP], et al
- US 4137230 A 19790130 - HASHIMOTO NAOTO, et al
- US 4260608 A 19810407 - MIYASHITA OSAMU, et al
- US 5208020 A 19930504 - CHARI RAVI J [US], et al
- US 4248870 A 19810203 - MIYASHITA OSAMU, et al
- US 4265814 A 19810505 - HASHIMOTO NAOTO, et al
- US 4308268 A 19811229 - MIYASHITA OSAMU, et al
- US 4308269 A 19811229 - MIYASHITA OSAMU, et al
- US 4309428 A 19820105 - MIYASHITA OSAMU, et al
- US 4317821 A 19820302 - MIYASHITA OSAMU, et al
- US 4322348 A 19820330 - ASAI MITSUKO, et al
- US 4331598 A 19820525 - HASEGAWA TORU, et al
- US 7301019 B2 20071127 - WIDDISON WAYNE C [US], et al
- US 7598375 B2 20091006 - HO GUOJIE [US], et al
- US 7521541 B2 20090421 - EIGENBROT CHARLES W [US], et al
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- WIDDISON ET AL., J. MED. CHEM., vol. 49, 2006, pages 4392 - 4408
- AKSSIRA, M. ET AL., J. MAROCAIN DE CHIMIE HETEROCYCLIQUE, vol. 1, 2002, pages 44 - 47
Citation (search report)
- [AD] WO 2007021674 A2 20070222 - MILLENNIUM PHARM INC [US], et al
- [AD] WO 2006078809 A2 20060727 - IMMUNOGEN INC [US], et al
- [A] WO 2012074757 A1 20120607 - GENENTECH INC [US], et al
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
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DOCDB simple family (application)
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